Abstract: A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 40 guiding light from the light source, having an emitting surface, a front surface and a bottom surface, the emitting surface adjacent to the light source; a reflector arranged under the bottom surface of the light wave guide plate, reflecting light; and at least one cholesteric liquid crystal (CLC) film arranged over the front surface of the light wave guide plate, collimating light.

Abstract: A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 40 guiding light from the light source, having an emitting surface, a front surface and a bottom surface, the emitting surface adjacent to the light source; a reflector arranged under the bottom surface of the light wave guide plate, reflecting light; and at least one cholesteric liquid crystal (CLC) film arranged over the front surface of the light wave guide plate, collimating light.

Abstract: A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 40 guiding light from the light source, having an emitting surface, a front surface and a bottom surface, the emitting surface adjacent to the light source; a reflector arranged under the bottom surface of the light wave guide plate, reflecting light; and at least one cholesteric liquid crystal (CLC) film arranged over the front surface of the light wave guide plate, collimating light.

Abstract: A transmissive liquid crystal display device includes first and second substrates spaced apart and facing each other, a cholesteric liquid crystal (CLC) color filter layer on an inner surface of the first substrate, the CLC color filter layer including first areas for displaying R, G and B and second areas between adjacent first areas, a first polarizer on an outer surface of the first substrate, a backlight unit on the first polarizer, a retardation plate on an outer surface of the second substrate, a second polarizer on the retardation plate, and a liquid crystal layer between the first and second substrates.

Abstract: A liquid crystal display (LCD) realizes a high brightness by using cholesteric liquid crystal (CLC) in a color filter and a polarizer, and improves viewing angles by using a hologram diffuser. The LCD includes a back light unit to produce and supply light, and a collimating sheet to collimate the light supplied by the back light unit. A CLC polarizer transmits left-circularly polarized light from the collimating sheet, and reflects other light. A lower substrate is disposed above the CLC polarizer, and an upper substrate is disposed above the lower substrate and includes a holographic diffuser which diffuses light without altering a polarization of the light. A liquid crystal layer is disposed between the lower substrate and the upper substrate, and a color filter layer which transmits only predetermined wavelengths of light is also disposed between the lower substrate and the upper substrate. An upper linear polarizer is located above the upper substrate.

Abstract: A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing film with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.

Abstract: A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the first substrate, a diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.

Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a retardation layer on an outer surface of the first substrate; a linear polarizing layer on the retardation layer; a cholesteric liquid crystal color filter (CCF) layer on an inner surface of the second substrate; a liquid crystal layer between the first substrate and the CCF layer; a first cholesteric liquid crystal (CLC) polarizing layer on an outer surface of the second substrate, the first CLC polarizing layer having a first helical pitch of a first circular polarization direction; a second cholesteric liquid crystal (CLC) polarizing layer on the first CLC layer, the second CLC polarizing layer having a second helical pitch of a second circular polarization direction opposite to the first circular polarization direction; and a backlight unit outside the second CLC layer.

Abstract: A fabricating method of a substrate for a liquid crystal display device includes: coating a cholesteric liquid crystal material on a substrate to form a cholesteric liquid crystal layer, the substrate having a plurality of sub-pixel regions; disposing a mask having a plurality of open portions over the cholesteric liquid crystal layer; irradiating the cholesteric liquid crystal layer through the mask and curing the cholesteric liquid crystal layer, wherein each open portion is smaller than each sub-pixel region.

Abstract: A reflective liquid crystal display device includes first and second substrates spaced apart and facing each other, a gate line and a data line on an inner surface of the first substrate and crossing each other to define a pixel area, a thin film transistor electrically connected to the gate and data lines, a passivation layer covering the thin film transistor, a blocking layer on the passivation layer and corresponding to the thin film transistor, a pixel electrode on the passivation layer and connected to the thin film transistor, a retardation film on an outer surface of the first substrate, a polarizer on the retardation film, an absorption layer on an inner surface of the second substrate, a cholesteric liquid crystal color filter layer on the absorption layer, a common electrode on the cholesteric liquid crystal color filter layer, and a liquid crystal layer between the common electrode and the pixel electrode, wherein the data line overlaps adjacent pixel electrodes and a overlapping width is over 50%

Abstract: A liquid crystal display device of the present invention includes: first and second substrates including a plurality of pixels, wherein each pixel divided into first to third sub-pixels; a double-layered cholesteric liquid crystal color filter (CCF) layer over the first substrate, the double-layered CCF layer including a first CCF layer including first and second CCF with a ratio of 1:2 in size and a second CCF layer including third and fourth CCF with a ratio of 2:1 in size; a first transparent electrode on the double-layered CCF layer; a second transparent electrode on the second substrate; a liquid crystal layer between the first and second transparent electrodes; and a backlight device adjacent to the first substrate and emitting light toward the first and second substrates.

Abstract: A fabricating method of a substrate for a liquid crystal display device includes: coating a cholesteric liquid crystal material on a substrate to form a cholesteric liquid crystal layer, the substrate having a plurality of sub-pixel regions; disposing a mask having a plurality of open portions over the cholesteric liquid crystal layer; irradiating the cholesteric liquid crystal layer through the mask and curing the cholesteric liquid crystal layer, wherein each open portion is smaller than each sub-pixel region.

Abstract: A fabricating method of a substrate for a liquid crystal display device includes: coating a cholesteric liquid crystal material on a substrate to form a cholesteric liquid crystal layer, the substrate having a plurality of sub-pixel regions; disposing a mask having a plurality of open portions over the cholesteric liquid crystal layer; irradiating the cholesteric liquid crystal layer through the mask and curing the cholesteric liquid crystal layer, wherein each open portion is smaller than each sub-pixel region.

Abstract: A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing layer with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.

Abstract: A liquid crystal display device have a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the fist substrate, diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.

Abstract: A liquid crystal display device having a cholesteric liquid crystal (CLC) color filter comprises a first substrate, a circular polarizer on the first substrate, a cholesteric liquid crystal (CLC) color filter on the circular polarizer, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from the first substrate, a second electrode beneath the second substrate, a liquid crystal layer between the first and second electrodes, a back light under the first substrate, a diffusive film on the second substrate, a retardation layer on the diffusive film, and a linear polarizer on the retardation layer.

Abstract: A backlight device for a liquid crystal display device includes a light source providing light; a light waveguide plate 40 guiding light from the light source, having an emitting surface, a front surface and a bottom surface, the emitting surface adjacent to the light source; a reflector arranged under the bottom surface of the light wave guide plate, reflecting light; and at least one cholesteric liquid crystal (CLC) film arranged over the front surface of the light wave guide plate, collimating light.

Abstract: A liquid crystal display device of the present invention includes: first and second substrates including a plurality of pixels, wherein each pixel divided into first to third sub-pixels; a double-layered cholesteric liquid crystal color filter (CCF) layer over the first substrate, the double-layered CCF layer including a first CCF layer including first and second CCF with a ratio of 1:2 in size and a second CCF layer including third and fourth CCF with a ratio of 2:1 in size; a first transparent electrode on the double-layered CCF layer; a second transparent electrode on the second substrate; a liquid crystal layer between the first and second transparent electrodes; and a backlight device adjacent to the first substrate and emitting light toward the first and second substrates.

Abstract: A transmissive liquid crystal display device includes first and second substrates spaced apart and facing each other, a cholesteric liquid crystal (CLC) color filter layer on an inner surface of the first substrate, the CLC color filter layer including first areas for displaying R, G and B and second areas between adjacent first areas, a first polarizer on an outer surface of the first substrate, a backlight unit on the first polarizer, a retardation plate on an outer surface of the second substrate, a second polarizer on the retardation plate, and a liquid crystal layer between the first and second substrates.

Abstract: A reflective cholesteric liquid crystal (CLC) display device has a reflection layer in or on a cholesteric liquid crystal color filter to increase a luminance and a contrast ratio of a liquid crystal display device. A reflective cholesteric liquid crystal display device includes a first substrate, an absorption layer on the first substrate, a cholesteric liquid crystal color filter on the absorption layer, a reflection layer on the absorption layer, the reflection layer reflecting light in a whole range of wavelengths, a first electrode on the cholesteric liquid crystal (CLC) color filter, a second substrate spaced apart from and over the first substrate, a second electrode beneath the second substrate, a retardation layer on the second substrate, a polarizer on the retardation layer and a liquid crystal layer between the first electrode and the second electrode.